Roll-polishing mechanism



LJEBLOSE ROLL POLISHING MECHANISM June 22 1926. 1,589,835

Filed Nov. 5, 1925 5 Sheets-Sheet 1 INVENTOR av z I. J. BLOSE ROLL POLISHING MECHANISM June 22 i925. 1,589,835

Filed Nov. 5, 1925 3'Sheets-Sheet 2 June 22 1926.

l. J. BLOSE ROLL POLISHING MECHANISM 1925 3 Sheets-Sheet 3 Filed Nov. 5

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Patented June 22, 1926.

unireo stares IRVIN J. BLOSE, 033 WASHINGTON, PENNSYLVANIA.

ROLL-POLISHING MECHANISM.

Application filed November 5, 1925.

The present invention relates to rolling mills, and particularly to a roll polishing mechanism for plate rolls.

According to the present invention, it is proposed to provide a roll polishing means whereby any desired portion of either the upper or lower roll of a stand may be polished during the operation of the mill without interference with the operation of the mill. The invention proposes, further, to provide a construction which is relatively simple and which may adapted to mills of the type now in use without modification thereof, and it is so arranged as to have no part of its mechanism in the path of the sheets passing through the mill.

Various forms of roll polishing devices have been proposed, but many of them are of a complicated nature which does not ren der their application to present types of mills practical, and even though such devices have been heretofore proposed, it remains the practice in sheet mills to polish the rolls by means of a stone held in place by a workman. This does not permit of the rolls being polished while they are in operation on sheets, and, consequently, p0lishing of the rolls can only be effected at a loss of production for the mill.

The invention may be readily understood by reference to the accompanying drawings, which illustrate a preferred embodiment of the invention, but to the specific construc tion and arrangement of which the present invention is not confined.

In the drawing Figure 1 is a front elevation of a mill embodying the present invention;

Figure 2 is a vertical section on the line II H of Figure 1;

Figure 3 is a detail horizontal section on the line Ill-HI of Figure 2;

Figure 4. is a side elevation of a portion of the roll housing showing the pivotal suspension for one of the operating levers of the present invention;

Figure 5 is a detail perspective View of a form of polishing device for use with the present invention; and

Figures 6 and 7 are detail views of a selfreleasing connection which may be employed on the apparatus at one side of the mill.

in the drawings 5 designates a standard roll housing, 6 is the upper roll ans 7 the lower roll. The fore plate of the mill over Serial No. 67,104.

which sheets passing through the mill move is designated 8.

At each side of the roll housing is a bell crank lever designated 9, having an up wardly extending arm 10 and a downwardly extending arm 11. The bell crank lever 9 is of a peculiar shape, and the portion between the arms 10 and 11 extends laterally, as indicated at 12, to pass part way through the usual opening 13 in the roll housing. A suitable bracket 14 in the roll housing pro vides a pivotal support for the loop. With this arrangement a pivotal mounting is provided for the bell crank, but the mounting is within the roll housing instead of being on the inner face thereof. The arms 10 and 11 which are on the inner face of the roll housing are spaced apart. As thus arranged, the plates can pass through th mill and the bell crank levers are disposed entirely out of their path.

Connecting the upper ends of the arms 10 is a cross bar 15. Connecting the lower ends of the arms 11 1s a cross bar 16. When a downward pressure is applied to the cross bar 16, the cross bar 15 is moved away from the roll 6. Then the cross bar 16 is lifted, the cross bar 15 is moved toward the upper roll 6.

Slidably and removably carried on the cross bar 15 is a holder 17 on which is carried an abrasive stone 18. Normally the stone 18 bears against the surface of the roll to polish the same. lVhen it is desired to move the stone from one position to another to polish any portion of the roll needing correction, the cross bar 16 is depressed, moving the cross bar 15 away from the upper roll, whereupon the holder 17 may be easily slid along the cross bar 15 to the desired position.

For depressing the arm 16 without standing directly in front of the mill, a rock shaft 19 is mounted on the front of the roll housing. This shaft 19 has a crank portion 20 intermediate its ends and has an operating lever 21 at one end thereof. At 22 are bearing brackets for the shaft 19.

When lever 21 is lifted, the shaft 19 is rocked, moving crank 20 into contact with cross bar 16 to depress the cross bar.

For lifting the cross bar 16 and for yieldably urging the cross bar 15 toward the upper roll 6, a suitable counterweight is provided. i have shown such a weight at 223, this weight being attached to a cord 24 passing through a sheave 25 suspended from the plate 8 and having its other end attached to the cross bar 16.

A somewhat similar arrangement is provided for polishing the lower roll 7. A bell crank lever 26 is provided on the inner face of the roll housing at each side oil? the mill, these cranks being pivotally supported at 27. They are provided with an upwardly extending arm 28 and a laterally )rojccting arm 29. arms 28 are connected by a cross bar 30 and the arms 29 are connected by a cross bar 31.

Slidable along the cross bar 30 is a holder 17 similar tothe holder 17 on the cross bar 15. This holder al o carries a polishing stone 18.

A counterweight 32 is connected with the cross bar 31 bv means of a cord passing over a sheave olsuspending from the plate 8 and having its other end attached to the cross bar 31. The action of this weight 32 is to urge the bar 30 toward the roll 7 to hold the polishing stone in contact with the surface of the roll. .Vhen it is necessary to adjust the holder 1?, cross bar 31 is depressed, swinging the cross bar 30 away from the roll 7.

Inasmuch as the holder 1'? on the lower cross bar 30 is below the fore plate 8, it is rather inaccessible. In order that it may be more conveniently adjusted, a rigid handle 17 may be secured thereto, this handle extending upwardly and forwardly, as best shown in Figure 2, and having its upper end terminating in a guide groove on the under face of the plate 8. This groove is designated 37.

\Vith the construction thus provided, the cross bars and 80 may be independently operated, and the polishing stone on either may be adjusted without disturbing the polishing stone on the other or without moving it out of contact with that surface of the roll with which it is engaged. The equipment can be readily installed in a standard mill without any change in the construction of the mill. hen installed all of the parts thereof are out 01" the path of sheets moving through the mill. Such adjustments as are necessary can be made without interfering with normal operation of the mill and without danger to the workmen. Polishing with an arrangen'ient of this kind can be effected continuously during the entire period of operation of the mill, or it can be discontinued when desired by holding the cross bars 15 and away from their respective rolls.

In order that the equipment may yield in the event of any accident which would cause a spreading of the roll housings, the cross bars 15, 16, 30 and 31 preferably have a seli releasing engagement with the parts to which they are joined at at least one side of the mill. Such a connection is shown in Figures 6 and 7. The ends of the cross bars are slotted, as indicated at 38, and engage a pin or bolt 39 011 the part with which the cross bars connect. In the event that the roll housings are spread, the pins may slide in their slots so as to permit the connect-ion to separate without injury to the respective elements.

l Vhile l have specifically shown and described a preferred embodiment of the invention, it ill be understood that various changes and modifications may be made in the details of construction within the spirit of my invention and under the scope of my broader claims.

I claim:

1. The combination with a rolling mill having housings and upper and lower rolls in the housings, of a polishing mechanism including a lever on the inner faces 01: the housings having two arms, one of which extends upwardly and forwardly and the other of which extends downwardly and forwardly, the said lever having a laterally extending portion extending into the openings in the roll housings, said laterally extending portion connecting the two arms, means for pivotally supporting the laterally extending portion of each lever, a cross bar connecting the upwardly extending arms, a polishing stone on the cross bar, and a counterweight operatively connected with the downwardly extending arms of the lever, substantially as described.

2. The combination with a rolling mill having housings and upper and lower rolls in the housings, 01' a polishing mechanism for the upper roll including a bell crank lever secured to the inner face of each housing and having the two arms thereof spaced apart and connected to a laterally extending portion projecting into openings in the roll housings, means in said openings providing a support for the laterally extending portion, a cross ha.- eonnecting the upper ends of the cranks, a polishing stone adjustably mounted thereon, and means cooperating wit-h the lower arms 01 the lovers for urging the cross bar toward the upper roll, substantially as described.

3. The combination with a rolling mill having housings and upper and lower rolls in the housings, of a polishing mechanism for each roll including a cross bar extending across each roll, a pair of hell crank levers supporting the upper cross bar, a pair of hell crank levers supporting the lower cross bar, the bell cranks for the upper cross bar having an oliset portion providing clearance for sheets passing through the mill, 3. polishin stone adjustably carried on each cross bar, and means connected with the bell cranks for yieldably urging the cross bars toward their respective rolls, substantially as described.

4:. The combination with a rolling mill having upper and lower rolls and roll housings, of a polishing means for the rolls including cross bars extending between the housings and cranks pivotally mounted in the housings, interfitting tongue and slot connections between the cross bars and cranks for frictionally holding the parts connected whereby the crossbars may be automatically releasable when the parts are subjected to excessive spreading strains, substantially as described.

5. The combination with a rolling mill having housings, a fore-plate, and a pair of rolls, of a cross bar extending across each roll, a polishing stone on the cross bar, and operating means for the respective cross bars below the fore plate and between the housings, said operating means including means for yieldingly urging the cross bars toward heir respective rolls, substantially as described.

In testimony whereof I have hereunto set u my hand.

IRVIN J. BLOSE. 

